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International Journal of Renewable Energy Development
Published by Center of Biomass and Renewable Energy
ISSN : 22524940     EISSN : 27164519     DOI : https://doi.org/10.61435/ijred.xxx.xxx
Core Subject : Science, Engineering,
Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering
The International Journal of Renewable Energy Development - (Int. J. Renew. Energy Dev.; p-ISSN: 2252-4940; e-ISSN:2716-4519) is an open access and peer-reviewed journal co-published by Center of Biomass and Renewable Energy (CBIORE) that aims to promote renewable energy researches and developments, and it provides a link between scientists, engineers, economist, societies and other practitioners. International Journal of Renewable Energy Development is currently being indexed in Scopus database and has a listing and ranking in the SJR (SCImago Journal and Country Rank), ESCI (Clarivate Analytics), CNKI Scholar as well as accredited in SINTA 1 (First grade category journal) by The Directorate General of Higher Education, The Ministry of Education, Culture, Research and Technology, The Republic of Indonesia under a decree No 200/M/KPT/2020. The scope of journal encompasses: Photovoltaic technology, Solar thermal applications, Biomass and Bioenergy, Wind energy technology, Material science and technology, Low energy architecture, Geothermal energy, Wave and tidal energy, Hydro power, Hydrogen production technology, Energy policy, Socio-economic on energy, Energy efficiency, planning and management, Life cycle assessment. The journal also welcomes papers on other related topics provided that such topics are within the context of the broader multi-disciplinary scope of developments of renewable energy.
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 761 Documents
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Single-Layer Graphene Modified TiO₂ Photoanode for Enhanced Efficiency of Chlorophyll-Based Dye-Sensitized Solar Cells Uzfi Helmi Zamzami; Prihanto Trihutomo; Aminnudin Aminnudin; Tuan Amran Tuan Abdullah
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62328

Abstract

The escalating need for renewable energy resources has promoted research and development in dye-sensitized solar cells (DSSCs) with improved performance using sustainable and environmentally friendly materials. This study aims to synthesize and characterize TiO₂–graphene composites as photoanodes to enhance electron transport and electrical conductivity in DSSCs sensitized with chlorophyll dye. TiO₂–graphene composites were prepared with graphene concentrations of 0.5%, 1.0%, and 1.5% v/v, while pure TiO₂ was used as a control sample. The resulting materials were deposited as photoanode films and Morphological, structural, chemical, and optical properties were examined through SEM, XRD, FTIR, and UV–Vis spectroscopy. The photovoltaic performance of the assembled DSSCs was evaluated through current–voltage (I–V) measurements. The results indicate that graphene incorporation significantly improves surface morphology and promotes stronger interfacial interaction between TiO₂ and graphene, as evidenced by the formation of Ti–O–C functional bonds. The presence of graphene also leads to a slight reduction in TiO₂ crystallinity, which is favorable for charge transport. UV–Vis analysis reveals a redshift in the absorption edge and A decrease in the optical band gap was observed, indicating enhanced responsiveness to visible-light irradiation. Among the investigated compositions, the TiO₂–graphene photoanode with 1.0% v/v graphene exhibits the best photovoltaic performance, achieving an energy conversion efficiency close to 1% and a fill factor of approximately 62%. Higher graphene content (1.5% v/v) results in particle agglomeration and reduced film uniformity, which negatively affects device performance. Overall, this study demonstrates that moderate graphene addition effectively enhances conductivity, charge transfer, and photoanode stability, highlighting TiO₂–graphene composites as promising eco-friendly materials for efficient and sustainable DSSC applications

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